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Article

A Penalized Likelihood Approach to Parameter Estimation with Integral Reliability Constraints

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Department of Economics, York University, Toronto ON M3J 1P3, Canada
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Department of Mathematics and Statistics, York University, Toronto ON M3J 1P3, Canada
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Author to whom correspondence should be addressed.
Academic Editors: Carlos Alberto de Bragança Pereira and Adriano Polpo
Entropy 2015, 17(6), 4040-4063; https://doi.org/10.3390/e17064040
Received: 21 April 2015 / Accepted: 10 June 2015 / Published: 12 June 2015
(This article belongs to the Special Issue Inductive Statistical Methods)
Stress-strength reliability problems arise frequently in applied statistics and related fields. Often they involve two independent and possibly small samples of measurements on strength and breakdown pressures (stress). The goal of the researcher is to use the measurements to obtain inference on reliability, which is the probability that stress will exceed strength. This paper addresses the case where reliability is expressed in terms of an integral which has no closed form solution and where the number of observed values on stress and strength is small. We find that the Lagrange approach to estimating constrained likelihood, necessary for inference, often performs poorly. We introduce a penalized likelihood method and it appears to always work well. We use third order likelihood methods to partially offset the issue of small samples. The proposed method is applied to draw inferences on reliability in stress-strength problems with independent exponentiated exponential distributions. Simulation studies are carried out to assess the accuracy of the proposed method and to compare it with some standard asymptotic methods. View Full-Text
Keywords: confidence interval; coverage probability; delta method; exponentiated exponential distribution; penalized likelihood; r*-formula confidence interval; coverage probability; delta method; exponentiated exponential distribution; penalized likelihood; r*-formula
MDPI and ACS Style

Smith, B.; Wang, S.; Wong, A.; Zhou, X. A Penalized Likelihood Approach to Parameter Estimation with Integral Reliability Constraints. Entropy 2015, 17, 4040-4063. https://doi.org/10.3390/e17064040

AMA Style

Smith B, Wang S, Wong A, Zhou X. A Penalized Likelihood Approach to Parameter Estimation with Integral Reliability Constraints. Entropy. 2015; 17(6):4040-4063. https://doi.org/10.3390/e17064040

Chicago/Turabian Style

Smith, Barry, Steven Wang, Augustine Wong, and Xiaofeng Zhou. 2015. "A Penalized Likelihood Approach to Parameter Estimation with Integral Reliability Constraints" Entropy 17, no. 6: 4040-4063. https://doi.org/10.3390/e17064040

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